Pressure-regulator.



PATENTED JULY 28, 1903.

J. c. STEWART.l

PRESSURE REGULATOR.

l. LER-l APPLICATION FILED MAY 6, 1903.

N0 MODEL.

Iig@

flttomu S UNITED STATES 'Patented July 28, 1903.

PATENT OFFICE.

JOHN C. STEWART, OF FORT MYER, VIRGINIA, ASSIGNOR OF lONE-HALF TO ANDREWS. BURT, OF FORT MYER, VIRGINIA.

PREssUREfREGuLAToR.

SPECIFICATION forming part of Letters Patent No. 734,993, dated July 28,1903.

Application led May 6,1903. Serial No. 155,931. (No model.)

To @ZZ whom it may concern:

13e it known that I, JOHN @.STEWART, a c iti zen of the UnitedStates,residing at Fort Myer, in the county of Alexandria and State ofVirginia, have invented certain new and useful Improvements inPressure-Regulators; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain improvements in what may be termedpressure-regulatorsg7 and it has for its object to provide forsimplicity of construction, facility of operation, and ready practicalapplication th ereof in the use of the same.

Said invention consists, among other features, of a regulator comprisingin its construction generally a valve, a flexible diaphragm, and aclosure or chamber, said parts being adapted by the action of preferablyair-pressure to automatically regulate the ow of a liquid or fuel formaintaining` aconstant, uniform, or regular forcingpressure, also of thegeneral construction and arrangement of parts, substantially ashereinafter more fully disclosed, and speciiically pointed out by theclaims.

In the accompanying drawings, illustrating the preferred embodiment ofmy invention, Figure l is a sectional elevation, and Fig. 2 is ahorizontal section, thereof.

It will be understood that I do not limit myself as to details as hereinshown, as they may be changed as circumstances suggest without departingfrom the spirit of my invention and the same remain intact and beprotected.

In carrying into elf-ect my invention I employ, preferably, a casing orcylinder l, with its chamber l opening out through the bottom intotubular form, as at lb, and provided with a screw-threaded connected-upclosure or cap 1C. Arranged within said chamber is a flexible diaphragm2, of rubber, leather, dre., clamped or held in place near its marginbetween annular knife-edged ribs or projections 3, formed upon thebottom of said chamber and upon the under side of said closure or cap,respectively. Said diaphragm or partition is slipped or fitted centrallyupon the upper end of-a pressure-delivery-pipe section 4, it being heldthereto by means of a plate or disk 5, preferably integral with saidpipesection and upon which it rests, and bymeans of a nut 6, preferablyconcave-convex and screwing upon the extreme upper end of saidpipe-section and engaging or bearing upon said diaphragm. Said plate ordisk is of course of less diameter or area than said diaphragm to notinterfere with the flexing 0r yielding action of said diaphragminteriorly of the clamping or securing knife-edged point between saiddiaphragm and the inclosing casing. Said cap or closure lchas producedcentrally therein a bore or passage ld of varying diameters or steppedat different points in its length, as atie, 1f, and 1g, respectively,the same finally terminating at its lower end into a contractedextension or port lh, opening into the chamber l.

A pressure-supply-pipe section 7 is screwed into the step 1 of the boreor passage la, previous to which, however, a washer S, of suitablematerial-as rubber, leather, &c.-is inserted into the step or recess lgof said bore or passage. Above said washer is introduced into the step1f of said passage a thimble 8b, with its lower end partially resting oren croaching upon said washer to retain it in place against displacementby the valve, presently referred to, when it is actuated. A

. pressure-tight packing-ring SC isiinally interposed between saidthimble and said supplypipe section. The further purpose of said thimbleis to prevent contact of the lower end of the pipe-section 7 with theflexible washer 8; otherwise as said pipe-section was being screwed orturned home such action or movement of said pipe-section would buckle orpucker said washer.

Vithin the pressure-suppl'y-pipe section 7 is inserted a valve 9,preferably of the construction disclosed. Said valve, having its extremeupper end fitting the bore or interior of the pipe-section 7 andprovided with a screw-driver-receiving slot 9X for its ready insertionin place and removal, has its face or downwardly-presented enlargement9a of greater area than the port or aperture lh to provide forencompassing or closing said aperture or port, as presently explained,said valve-face or enlargement standing, however, initially removed fromsaid port. Said valve 9 has a diametrically-reduced downward extensionor stem 9b, with its lower end screwed into or otherwise preferablydetachably connected to a partition lO, integral with and arranged belowthe upper end of the pipe-section 4, ports 11 being produced in saidpartition laterally of said stem for the passage of the pressuretherethroughl for delivery via said pipe-section. Produced laterally inthe upper end enlargement of the valve 9 are pressure-inlet ports 9C.

Applied to the pipe-section 4 is a spring l2, with its ends bearingagainst the plate or disk 5, integral with said pipe-section, andagainst a nut 13, fitting upon said pipe-section and screwing into ascrew-threaded portion of the opening in the casing receiving saidpipe-section, said spring having a predetermined tension and adapted tohold the valve 9 normally open to deliver the pressure into the chamberof said casing, said pressure passing therefrom through the ports ll, asabove noted. By suitably manipulating said nut the tension of saidspring can be readily compensated as occasion may make vsuch necessary,as is obvious. It will therefore be observed that pressure'(compressedair) being supplied via the pipe-section 7, said pressure will passthrough the ports 9 laterally of the valve 9 and past the lastnamed,thence through the port lh into the chamber la, and therefrom throughthe ports Il into and be delivered via the pipe-section 4 to the desiredpoint, as for utilization. Excess of pressure will be neutralized by thebacking of the pressure into the casing-chamber through the ports l1 andits action upon the diaphragm 2, flexing it after having overcome thetension or stress of the spring 12, which will effect the seating of thevalve 9, thus exhausting or cutting off the pressuresupply to thecasing-chamber and its further delivery. Of course as the pressure isreduced at the point of consumption the valve 8 will unseat and permitthe further supply of pressure in the manner above pointed out.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, isl. A pressure-regulator comprising achamber, a flexible diaphragm arranged in said chamber,apressure-delivery pipe having a partition provided with ports, and avalve, with its stem, lsaid stem connecting with said partition, andsaid valve controlling the delivery of pressure to said chamber.

- 2. A pressure-regulator embracing a chamber having a pressure-supplypipe and a pressure-delivery pipe, a flexible diaphragm arranged in saidchamber, a pressure-supplycontrolling valve, and a pressure-deliverypipe connecting with said-diaphragm, and

means eecting connection between said valve and said delivery-pipe, saidconnecting means including a ported partition fixed in saidpressure-delivery pipe.

3. A pressure-regulator comprising a chamber containing a flexiblediaphragm, a valve with its stem, means connecting said stem tosaiddiaphragm, and a pressure-supply pipe for said chamber, said valve beingseated in said pipe and having in its upper end lateral ports, saiddiaphragm adapted to effect the closing and opening of said valve underthe action of the pressure.

4. Apressu re-regulator comprising a chamber containing a flexiblediaphragm, held between knife-edged projections of said chamber, avalve, a pressure-supply pipe connected to said chamber and containingsaid valve, a pressure-delivery pipe having a ported partition, saidvalve having a diametrically-contracted extension connected to saidported partition. v

5. A pressure-regulator comprising a chamber containing a flexiblediaphragm, held between knife-edged projections of said chamber, avalve, a pressure-supply pipe connected to said chamber and containingsaid valve, a pressure-delivery pipe having a ported partition, saidvalve having a diametrically-contracted extension connected to saidported partition, said pressure-delivery pipe having an integral disk orplate and a nut effecting the connection of said diaphragm to said pipe.

6. In a pressure-regulator, the combination of a chamber having aflexible diaphragm, a pressure-supply pipe, a valve, means connectingsaid valve to said diaphragm, a flexible washer serving as a seat forsaid valve and a thimble adapted to prevent contact of said pipe withsaid washer.

A 7. In a pressure-regulator, the combination of a chamber having aflexible diaphragm, the closure of said chamber having a seriallysteppedpassage or bore, a pressure-supply pipe, a valve, means connecting saidvalve to said diaphragm, a flexible washer serving as a seat for saidvalve and a thimble adapted to prevent contact of said pipe with saidwasher, said washer, thimble and pressuresupply pipe being seated intothe different steps of said bore or passage, successively.

8. A pressure-regulator, embracing a chamber, a flexible diaphragmarranged in said chamber,apressure-supply-controllingvalve,pressure-delivery means connecting with said diaphragm and having portsadapted to continuously deliver the pressure from said chamber, andmeans connecting said pressure-supply-controlling valve with saidpressure-delivery means.

9. A pressure-regulator embracing a chamber, a iiexible diaphragmarranged in said chamber, a pressure-suppl T-controlling valve, with itsstem, pressure-delivery means movable with said diaphragm and havingaported partition adapted to continuously deliver the IOO los

IIO

pressure from said chamber, said stem of valve Connecting With saidpartition centrally of the ports thereof.

l0. In a pressure-regulator, the combination of a Chamber, a flexiblediaphragm arranged in said chamber, a delivery-pipe Connected to saiddiaphragm, a spring supporting said delivery-pipe and diaphragm normallyin position, and a valve arranged in the pressuresupply pipe of saidchamber and connected to said delivery-pipe.

1l. In apressiu'e-regulator,the combination of a chamber having apressure-supply pipe, a valve arranged in said pipe, a flexiblediaphragm arranged in said chamber, a deliverypipe having a lateralextension applied to said diaphragm upon one side, and having its upperend secured to the opposite side of said diaphragm, means for supportingsaid delivery-pipe, together with said diaphragm,yield inglyin normalposition, said valve being oonneoted to said delivery-pipe. v

I2. In apressure-regulator,the combination of a chamber having apressure-supply pipe, a valve arranged in said pressure-supp 1y pipe, alexible diaphragm arranged in said chamber, a delivery-pipe having alateral disk-like extension applied to one side of said diaphragm, saidpipe havingits upper or one end held to the opposite side of saiddiaphragm, a spring supporting said delivery-pipe, together with saiddiaphragm, yieldingly in normal position, said valve being connected tosaid delivery-pipe.

13; In a pressure-regulator, the combination of a chamber having apressure-supply pipe, a valve arranged in said pipe, a flexiblediaphragm arranged in said chamber, a deliverypipe having a lateraldisk-like extension applied to one side of said diaphragm, said pipehaving its upper or one end held by a nut to the opposite side of saiddiaphragm and provided Within with a partition having ports, a springsupporting said delivery-pipe, together With said diaphragm, yieldinglyin normal position, said valve having its stem Connected to saidpartition. Y

In testimony whereof I afIiX my signature in presence of tWo witnesses.

JOHN C. STEVART.

Vitnesses:

J. E. SMITH, W. O. RAY.

